CN115532641B - Conveying line for mechanically detecting degree of concave-convex of circumferential surface of tubular workpiece - Google Patents

Conveying line for mechanically detecting degree of concave-convex of circumferential surface of tubular workpiece Download PDF

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Publication number
CN115532641B
CN115532641B CN202211278071.9A CN202211278071A CN115532641B CN 115532641 B CN115532641 B CN 115532641B CN 202211278071 A CN202211278071 A CN 202211278071A CN 115532641 B CN115532641 B CN 115532641B
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China
Prior art keywords
tubular workpiece
hook
rail
floating
circumferential surface
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CN202211278071.9A
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CN115532641A (en
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王君明
王锦良
陈丽英
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Xinchang Jincheng Precision Machinery Co ltd
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Xinchang Jincheng Precision Machinery Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/361—Processing or control devices therefor, e.g. escort memory
    • B07C5/362—Separating or distributor mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Feeding Of Workpieces (AREA)

Abstract

The invention provides a conveying line for mechanically detecting the degree of concave-convex of the circumferential surface of a tubular workpiece, and belongs to the technical field of radial hole machining of tubular workpieces. Conveying line of unsmooth degree of mechanical type detection tubular work piece circumference face includes: the two sides of the bearing frame are connected with a rotary belt for carrying the displacement of the bearing frame, and the bearing frame is provided with two bearing rods for supporting two sides of the bottom of the tubular workpiece and driving the tubular workpiece to rotate; the sliding frame is sleeved on the two bearing rods in a sliding way and is positioned at the inner side end of the bearing rods, and a pressing rod for pressing the top of the tubular workpiece is arranged on the sliding frame; the first floating hooks and the second floating hooks are symmetrically distributed in the height direction and are arranged on the longitudinal plate; and the inlet and outlet of the outer guide rail are arranged on one side of the first floating hook and one side of the second floating hook. The invention has the advantages of automatically detecting the degree of concave-convex on the circumferential surface of the tubular workpiece and automatically removing the tubular workpiece which does not meet the process requirements.

Description

Conveying line for mechanically detecting degree of concave-convex of circumferential surface of tubular workpiece
Technical Field
The invention relates to the technical field of radial hole machining of tubular workpieces, in particular to a conveying line for mechanically detecting the degree of concave-convex of the circumferential surface of a tubular workpiece.
Background
When the radial hole automatic processing device is used for processing the radial hole on the tubular workpiece, the degree of concave-convex on the circumferential surface of the tubular workpiece needs to be controlled within a reasonable process requirement range of the radial hole processing device. On an automatic radial hole machining assembly line of a tubular workpiece in a factory, the feeding and discharging of the radial hole machining device are all automatic. The degree of circumferential surface roughness of a pipe workpiece is generally detected by random sampling detection prior to machining. The random sampling detection can only roughly judge whether the degree of concave-convex of the circumferential surface of a batch of tubular workpieces meets the process requirement. Cannot be accurate and is not omitted. Therefore, the application provides a conveying line for mechanically detecting the degree of concave-convex of the circumferential surface of a tubular workpiece.
Disclosure of Invention
In order to solve the technical problems, the invention provides a mechanical conveying line for detecting the degree of concave-convex of the circumferential surface of a tubular workpiece, which is capable of automatically detecting the degree of concave-convex of the circumferential surface of the tubular workpiece and automatically eliminating the tubular workpiece which does not meet the requirements of a radial hole processing technology.
The technical scheme of the invention is realized as follows:
a conveyor line for mechanically detecting the degree of concavity and convexity of a circumferential surface of a tubular workpiece, comprising:
the two sides of the bearing frame are connected with a rotary belt for carrying the displacement of the bearing frame, and the bearing frame is provided with two bearing rods for supporting two sides of the bottom of the tubular workpiece and driving the tubular workpiece to rotate;
the sliding sleeve of the sliding rack is arranged on the two bearing rods and positioned at the inner side ends of the bearing rods, a space between the sliding rack and the outer side ends of the bearing rods is used for placing a tubular workpiece, a pressing rod used for pressing the top of the tubular workpiece is arranged on the sliding rack, and the inner side ends of the pressing rods are arranged on the sliding rack in a sliding manner in the height direction;
the first floating hooks and the second floating hooks are symmetrically distributed in the height direction and are arranged on the longitudinal plate in a sliding manner in the height direction, and the hook heads of the first floating hooks and the second floating hooks are arranged to be telescopic in the axial direction parallel to the tubular workpiece;
the inlet and outlet of the outer guide rail are arranged on one side of the first floating hook and one side of the second floating hook, and the middle part of the outer guide rail is provided with a bending section which is bent to the outer side end of the bearing rod;
the micro-motion transmission part is arranged on the sliding frame and is in transmission connection between the compression bar and the longitudinal plate, and is used for amplifying the lifting distance value of the compression bar when the compression bar is lifted and then driving the longitudinal plate to lift; wherein:
when the rising/falling distance of the pressing rod is smaller than the preset distance, the tubular workpiece is positioned on the bearing frame and conveyed forwards.
Further, the bearing frame comprises an inner frame body and an outer frame body, the inner side end of the bearing rod is rotatably arranged on the inner frame body, the outer side end of the bearing rod is rotatably arranged on the outer frame body, and a rejecting channel for separating tubular workpieces is formed between the bearing rod and the outer side end of the compression rod.
Further, the outer side bottom of outer support body and interior support body all is provided with the connecting axle, and the cover is equipped with the rail wheel on the connecting axle, and the rail wheel is supported on the gyration track, and the outside end and the gyration area fixed connection of connecting axle.
Further, one side of the sliding frame corresponding to the tubular workpiece is of a plate surface structure, a longitudinal guide groove is formed in one side of the sliding frame far away from the tubular workpiece, a longitudinal guide plate is arranged in the longitudinal guide groove in a sliding mode, the inner side end of the compression bar is arranged at the top end of the longitudinal guide plate, and a pull-down spring is arranged between the bottom end of the longitudinal guide plate and the inner bottom wall of the longitudinal guide groove.
Further, the micro-motion transmission part comprises a micro-motion rack, a gear set and a connecting rod group, wherein the micro-motion rack is fixedly arranged on the side face of the longitudinal guide plate, an input end gear of the gear set is meshed with the micro-motion rack, an output end gear of the gear set is coaxially fixed with one end of the connecting rod group, and the other end of the connecting rod group is rotationally connected to the longitudinal guide plate.
Further, the first floating hook and the second floating hook further comprise a main body part and a hook spring, the main body part is vertically fixed on one side of the longitudinal plate far away from the tubular workpiece, the hook spring is arranged between the hook head and the main body part, the hook head is arranged in the main body part in a telescopic manner, and the hook head penetrates through the longitudinal plate and then extends to one side of the longitudinal plate facing the tubular workpiece.
Further, the outer guide rail comprises a first rail and a second rail which are distributed up and down and are distributed in a staggered mode in the conveying direction, the first floating hooks are supported by the first rail after rising by a preset distance and walk on the first rail, and the second floating hooks are limited below the second rail and walk on the second rail after falling by a preset distance by the second rail.
Further, one side surface opposite to the two hook heads is a plane, one side surface opposite to the two hook heads is an inclined surface, a stop block is arranged on the plane of the hook heads, the stop block is in a right triangle shape, one bevel edge end part of the stop block, which faces the tubular workpiece, is rotationally connected with the hook heads and is provided with a torsion spring, the other bevel edge end of the stop block can be rotationally accommodated in the hook heads, and a hanging groove for the stop block to walk is formed in one side surface opposite to the first rail and the second rail.
Further, the upper part of the longitudinal plate is provided with a columnar structure, and the columnar structure is provided with a containing groove for containing the stop block when the hook head moves in a shrinking mode.
Further, the inlets of the first track and the second track are provided with a section of straight section parallel to the conveying direction, the inner side end of the bearing rod is provided with a rolling gear, and a rolling rack for driving the rolling gear to roll is arranged corresponding to the straight section.
The invention has the following beneficial effects:
1. the invention adopts a mechanical mode to automatically detect the degree of concave-convex on the circumferential surface of the tubular workpiece, and can automatically reject and sort and collect the tubular workpiece which does not meet the process requirements. The automatic control device has the advantages of high automation degree and low cost due to the adoption of a mechanical structure.
2. The invention is arranged at the upstream of the guide rail of the radial hole processing device, can improve the yield of processing radial holes of tubular workpieces and reduce the breakage rate of the drill bit of the radial hole processing device.
3. The invention detects and eliminates the tubular workpieces in a mode of detecting one by one, has high accuracy, no omission and outstanding effect.
Drawings
FIG. 1 is a schematic view of a conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to the present invention;
FIG. 2 is another view of the conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to the present invention;
FIG. 3 is a schematic view of the present invention when a first float hook of a conveyor line mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece slides on a first rail;
FIG. 4 is a schematic view of the present invention when a second float hook of the conveyor line mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece slides on a second rail;
FIG. 5 is a schematic view of a tubular workpiece with a conveying degree of concavity and convexity within a reasonable range of a conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece according to the present invention;
FIG. 6 is an enlarged view at A in FIG. 5 of the conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece in accordance with the present invention;
FIG. 7 is another view from another perspective of FIG. 5 of the conveyor line of the present invention for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece;
FIG. 8 is an enlarged view at B in FIG. 7 of the conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece in accordance with the present invention;
FIG. 9 is a partial schematic view of FIG. 5 of a conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece in accordance with the present invention;
FIG. 10 is another view from another perspective of FIG. 9 of the conveyor line of the present invention for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece;
FIG. 11 is a schematic drawing showing the disassembly of FIG. 9 of a conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece in accordance with the present invention;
FIG. 12 is an enlarged view at C of FIG. 11 of a conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece in accordance with the present invention;
fig. 13 is a schematic distribution diagram of a first track and a second track of a conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 13, a conveying line for mechanically detecting the degree of concavity and convexity of a circumferential surface of a tubular workpiece according to an embodiment of the present invention mainly includes a carrier 1, a revolving belt 2, a carriage 3, a compression bar 4, a first floating hook 6, a second floating hook 7, an outer guiding rail 8 and a micro-motion driving member.
The main function of the carrier 1 is to make the revolving belt 2 carry the carrier 1 for revolving movement by being connected with the revolving belt 2, and the tubular work piece is used for being placed on the carrier 1.
In this embodiment, the carrier 1 is rotatably provided with two carrier bars 21 for supporting both sides of the bottom of the tubular workpiece and driving the tubular workpiece to rotate. The two carrying bars 21 are arranged in parallel, and the distance between the two carrying bars 21 is smaller than the diameter of the tubular workpiece, and the carrying bars 21 cover the tubular workpiece in the length direction.
Specifically, the bearing frame 1 comprises an inner frame body 1.1 and an outer frame body 1.2, the inner side end of the bearing rod 21 is rotatably installed on the inner frame body 1.1, the outer side end of the bearing rod 21 is rotatably installed on the outer frame body 1.2, and the inner frame body 1.1 and the outer frame body 1.2 are matched to play a role in fixing the interval between the two bearing rods 21 and simultaneously support the two bearing rods 21.
The outer side bottoms of the outer frame body 1.2 and the inner frame body 1.1 are respectively provided with a connecting shaft 1.3, the connecting shafts 1.3 are sleeved with rail wheels 1.4, the rail wheels 1.4 are supported on the rotary rail 10, the outer side ends of the connecting shafts 1.3 are fixedly connected with the rotary belt 2, and the inner side ends of the connecting shafts 1.3 are fixedly connected with the corresponding outer frame body 1.2/inner frame body 1.1.
The rotary rail 10 is utilized to support the rail wheel 1.4 to play a role of supporting the bearing frame 1, and the connecting shafts 1.3 fixedly arranged on the outer frame body 1.2 and the inner frame body 1.1 are respectively and fixedly connected with the rotary belt 2 at the corresponding side, so that the bearing frame 1 is prevented from rotating, and the bearing frame 1 can be stabilized. Meanwhile, the rotary rail 10 is utilized to support the rail wheel 1.4, so that the rotary belt 2 can be prevented from being stressed, stretched and deformed, and the conveying stability and reliability are improved. In addition, the carrier 1 can be firmly supported in the axial direction of the tubular workpiece by utilizing the matching of the rail wheel 1.4 and the rail and the fixing mode of the connecting shaft 1.3 and the rotary belt 2.
Corresponding to the above-mentioned revolving belt 2 and the track can be arranged on the frame, and meanwhile, a guide plate supported on the surface of the inner ring of the revolving belt 2 can be arranged on the frame to improve the stability and conveying effect of the revolving belt 2, which is the prior art and will not be described herein.
The sliding frame 3 is slidably sleeved on the two bearing rods 21 and is positioned at the inner side end of the bearing rods 21, and a space between the sliding frame 3 and the outer side end of the bearing rods 21 is used for placing tubular workpieces. The pressing bars 4 are arranged parallel to the carrier bars 21, the pressing bars 4 being located in the middle of the two carrier bars 21 in the conveying direction. The inner side end of the pressing rod 4 is slidably arranged on the carriage 3 in the height direction, and when the tubular workpiece is placed on the carrier 1, the pressing rod 4 is used for pressing the top of the tubular workpiece.
At this time, a reject passage for the tubular workpiece to escape from the carrier 1 is formed between the outer end of the carrier bar 21 and the outer end of the presser bar 4. When the carriage 3 is displaced on the carrying rod 21 from inside to outside, the tubular workpiece is pushed outwards along the length direction of the carrying rod 21, and finally the tubular workpiece is separated from the carrying frame 1 and removed.
Specifically, the side surface of the carriage 3 corresponding to the tubular workpiece is a plate surface structure for better contact with the end surface of the tubular workpiece. A longitudinal guide groove 3.1 is formed in one side surface, far away from the tubular workpiece, of the sliding frame 3, a longitudinal guide plate 11 is arranged in the longitudinal guide groove 3.1 in a sliding mode, the top end of the longitudinal guide plate 11 extends out of the longitudinal guide groove 3.1, the inner side end of the compression bar 4 is arranged at the top end of the longitudinal guide plate 11, and a pull-down spring 12 is arranged between the longitudinal guide plate 11 and the inner bottom wall of the longitudinal guide groove 3.1.
At this time, the main function of the pull-down spring 12 is to cooperate with the self-gravity of the longitudinal guide 11 and the compression bar 4 to provide a downward force for the compression bar 4 all the time, so that the compression bar 4 can be tightly attached to the surface of the tubular workpiece. The longitudinal guide 11 serves to support the pressure bar 4 and serves as a force transmission element between the pull-down spring 12 and the pressure bar 4, while the longitudinal guide 11 guides the lifting movement of the pressure bar 4 by cooperation with the longitudinal guide slot 3.1, ensuring the stability of the pressure bar 4 pressing down the tubular workpiece.
In the embodiment, a protruding part 3.2 is outwards protruded on one side surface of the sliding frame 3 far away from the tubular workpiece, a longitudinal guide groove 3.1 is formed on the protruding part 3.2, and a jack 1.1.1 for inserting the protruding part 3.2 is formed in the inner frame body 1.1. In the initial state, the carriage 3 is directly supported by the inner frame body 1.1 by utilizing the cooperation of the protruding part 3.2 and the jack 1.1.1, so that the overall stability is improved.
The sliding frame 3 is also provided with a vertical plate 5 which can slide in the height direction, the first floating hook 6 and the second floating hook 7 are both arranged on the vertical plate 5, and the first floating hook 6 and the second floating hook 7 are distributed in an up-down symmetrical way. The first floating hook 6 and the second floating hook 7 each include a hook head 13, and the hook heads 13 of the first floating hook 6 and the second floating hook 7 are each provided to be retractable in parallel to the axial direction of the tubular workpiece.
In the present embodiment, the first floating hook 6 and the second floating hook 7 further include a main body portion 14 and a hook spring 15, the main body portion 14 being vertically fixed to a side surface of the vertical plate 5 remote from the tubular workpiece, at this time, the main body portion 14 being axially parallel to the tubular workpiece. The hook spring 15 is disposed between the hook head 13 and the main body 14, the hook spring 15 is disposed in the main body 14, the hook head 13 is telescopically disposed in the main body 14, and the hook head 13 extends to a side of the vertical plate 5 facing the tubular workpiece after penetrating the vertical plate 5.
The micro-motion transmission part 9 is arranged on the sliding frame 3 and is in transmission connection between the compression bar 4 and the longitudinal plate 5, and is used for driving the longitudinal plate 5 to lift after amplifying the lifting distance value when the compression bar 4 lifts. The micro-motion transmission part 9 comprises a micro-motion rack 9.1, a gear set 9.2 and a connecting rod group 9.3. The micro-motion rack 9.1 is fixedly arranged on the side face of the longitudinal guide plate 11, an input end gear of the gear set 9.2 is meshed with the micro-motion rack 9.1, an output end gear of the gear set 9.2 is coaxially fixed with one end of the connecting rod group 9.3, and the other end of the connecting rod group 9.3 is rotatably connected to the longitudinal guide plate 11.
At this time, the carrier bar 21 drives the tubular workpiece to rotate during the conveyance of the tubular workpiece. When the accuracy of the circumferential surface of the tubular workpiece is insufficient, the presser bar 4 pressed against the surface of the tubular workpiece floats up and down. The vertical floating compression bar 4 can control the micro rack 9.1 to float up and down through the longitudinal guide plate 11 in the lifting process, and the gear ratio of the gear set 9.2 is utilized to enable the gear set 9.2 to amplify the vertical floating distance value of the compression bar 4 and then convert the amplified vertical floating distance value into driving force to drive the linkage 9.3 to act, and the linkage 9.3 drives the vertical plate 5 to move up and down, so that the first floating hook 6 and the second floating hook 7 do lifting movement.
When the pressing rod 4 ascends/descends by a preset distance, the first floating hook 6/the second floating hook 7 slide on the outer guide rail 8 and drive the sliding frame 3 to move towards the outer side end of the bearing rod 21 through the longitudinal plate 5 to reject the tubular workpiece, and when the ascending/descending distance of the pressing rod 4 is smaller than the preset distance, the tubular workpiece is located on the bearing frame 1 and is conveyed forwards.
In this way, the bearing rod 21 can be used to drive the tubular workpiece to rotate, and the bearing rod 4 is matched to press the surface of the tubular workpiece, so that the irregular shape which cannot be visually judged by naked eyes on the circumferential surface of the tubular workpiece is amplified by the micro-motion transmission part 9 and then converted into the lifting process of the first floating hook 6 and the second floating hook 7 which can be directly observed by naked eyes through driving force.
Wherein the gear set 9.2 is rotatably mounted on the carriage 3 via a gear seat, so that the gear set 9.2 is integrated with the carriage 3 via the gear seat. The connecting rod group 9.3 comprises a first connecting rod and a second connecting rod, the first connecting rod is hinged with the second connecting rod, one end of the first connecting rod is coaxially fixed with an output end gear in the gear set 9.2, at the moment, the connecting rod group 9.3 is effectively connected with the sliding frame 3 through the output end gear of the gear set 9.2 and a gear seat, and one end of the second connecting rod is rotatably connected to the longitudinal plate 5. The two sides of the sliding frame 3 are provided with longitudinal sliding ways, and the two sides of the bottom end of the second connecting rod are respectively arranged in the sliding ways in a sliding way.
The inlet and outlet of the outer guide rail 8 is arranged at one side of the first floating hook 6 and the second floating hook 7, and the middle part of the outer guide rail 8 is provided with a bending section which is bent to the outer side end of the bearing rod 21.
In the present embodiment, the outer guide rail 8 includes a first rail 8.1 and a second rail 8.2 which are vertically arranged and are offset in the conveying direction, and the tubular workpiece passes through the first rail 8.1 and the second rail 8.2 in this order when being conveyed.
The first floating hook 6 is supported by the first rail 8.1 after being lifted by a preset distance and walks on the first rail 8.1. The radial machining device is assumed to be 0.1-0.15 mm in the allowable error value interval of the outer protrusion of the circumferential surface of the tubular workpiece according to the working procedure requirement of the radial hole, and the transmission ratio of the micro-motion transmission part 9 is assumed to be 1:10, so that the preset distance value of the first floating hook 6 rising at the moment is 1cm.
The second float 7 is limited by the second rail 8.2 to the lower part of the second rail 8.2 after being lowered by a preset distance and walks on the second rail 8.2. The allowable error interval of the radial processing device for the concave of the circumferential surface of the tubular workpiece is 0.1mm-0.15mm according to the working procedure requirement of the radial hole opening, and the transmission ratio of the micro-motion transmission part 9 is 1:10, so that the preset distance value for the second floating hook 7 to descend is 1cm.
Specifically, when the first floating hook 6/second floating hook 7 walks on the first rail 8.1/second rail 8.2, the first floating hook 6/second floating hook 7 is displaced outward in the axial direction of the tubular workpiece following the bent section, and at this time, the first floating hook 6/second floating hook 7 is displaced outward through the vertical plate 5 for the whole carriage 3. The carriage 3 rejects out the tubular workpiece on the carrier 1 during displacement. Thereafter, the first floating hook 6/second floating hook 7 will disengage from the first rail 8.1/second rail 8.2 from the outlet after following the first rail 8.1/second rail 8.2, so that the carriage 3 after rejecting the tubular workpiece is restored to the initial position.
In combination with the above, the first floating hook 6 and the second floating hook 7 can be used for removing tubular workpieces with protruding or recessed parts exceeding a preset value respectively. In the embodiment of the invention, the first floating hook 6 is used for removing the tubular workpiece with the concave beyond the preset value, the second floating hook 7 is used for removing the tubular workpiece with the convex beyond the preset value, and the tubular workpiece which is not removed is continuously conveyed forwards.
The first floating hook 6 and the second floating hook 7 can respectively remove two tubular workpieces which do not meet the specification, and meanwhile, the first rail 8.1 and the second rail 8.2 are matched in dislocation distribution in the conveying direction, so that the two tubular workpieces which do not meet the specification are removed in batches in the length direction of the conveying guide rail, and the same type of tubular workpieces which do not meet the specification can be collected effectively.
In addition, the arrangement mode makes the arrangement of the first rail 8.1 and the second rail 8.2, the first floating hook 6 and the second floating hook 7 extremely simple, and especially in the embodiment, the first floating hook 6 and the second floating hook 7 have the same structure except opposite directions, so that the implementation cost is greatly reduced. Meanwhile, the trend of the first track 8.1 and the trend of the second track 8.2 are completely the same, the shape and the size can be set to be in the same state, and only the first track 8.1 and the second track 8.2 are required to be reversely arranged in the height direction.
Further, one side of the two hook heads 13 opposite to each other is a plane, and one side of the two hook heads 13 opposite to each other is an inclined plane. When the error of the arc surface of the tubular workpiece is within the allowed interval, both hook heads 13 are located between the first track 8.1 and the second track 8.2. And the opposite side of the first rail 8.1 and the second rail 8.2 is provided with a bevel adapted to the two hook heads 13. During the lifting of the first floating hook 6 or the lowering of the second floating hook 7, the hook heads 13 are displaced towards the main body 14 side and compress the hook springs 15 by means of the inclined surfaces of the two hook heads 13, which are matched with the first rail 8.1 and the second rail 8.2. After the hook head 13 of the first floating hook 6/the hook head 13 of the second floating hook 7 passes over the first rail 8.1/the second rail 8.2 in the height direction, the hook spring 15 causes the hook head 13 to re-extend and be limited by the first rail 8.1/the second rail 8.2 in the height direction.
The plane of the hook head 13 is provided with a stop block 16, the stop block 16 is in a right triangle structure, and the stop block 16 is rotationally connected with the hook head 13 towards one bevel edge end of the tubular workpiece and is provided with a torsion spring. The torsion spring makes the hook head 13 in a state that the right-angle side is perpendicular to the plane of the hook head 13 in a natural state. The other beveled end of the stopper 16 can be received into the hook head 13 by rotation. A hanging groove 17 for the stop 16 to walk is arranged on one side surface of the first rail 8.1 and the second rail 8.2 opposite to each other.
Specifically, after the hook head 13 of the first floating hook 6/the hook head 13 of the second floating hook 7 passes the first rail 8.1/the second rail 8.2 by ascending/descending, the stopper 16 is blocked by the top surface of the first rail 8.1/the bottom surface of the second rail 8.2 during the extension of the hook head 13 and is turned inward of the hook head 13. When the stop block 16 moves to the range of the hanging groove 17 after the hook head 13 stretches out, the stop block 16 rotates out under the action of the torsion spring, the right-angle side of the stop block 16 is positioned in the hanging groove 17 after the stop block is rotated out, and the bottom end of the stop block 16 stretches into the hanging groove 17. At this time, the stopper 16 can drive the first floating hook 6/the second floating hook 7 under the action of the hanging groove 17 so that the slide plate is displaced to the outer side of the bearing rod 21, and reject the unqualified tubular workpiece.
Further, the upper part of the vertical plate 5 is provided with a columnar structure, and the columnar structure is provided with a containing groove 5.1 for containing the stop block 16 when the hook head 13 moves in a shrinking manner. The vertical plate 5 is arranged to be of a columnar structure, so that when the stop block 16 is displaced in the hanging groove 17, the columnar vertical plate 5 is easier to be matched with the first rail 8.1/the second rail 8.2, the guiding effect of the first rail 8.1 and the second rail 8.2 on the sliding plate is facilitated, and the effect of rejecting unqualified tubular workpieces is improved.
Wherein the inlets of the first rail 8.1 and the second rail 8.2 are provided with a straight section 18 parallel to the conveying direction, the inner end of the bearing rod 21 is provided with a rolling gear 19, and a rolling rack 20 for driving the rolling gear 19 to roll is arranged corresponding to the straight section 18. At this time, before the first floating hook 6/second floating hook 7 enters the entrance of the first track 8.1/second track 8.2, the rolling gear 19 rolls on the rolling rack 20 to drive the two bearing rods 21 to rotate in the same direction, at this time, the two bearing rods 21 drive the tubular workpiece to rotate, so that the circumferential surface of the tubular workpiece can pass through the compression bar 4 in turn, and the compression bar 4 can contact the circumferential surface of the tubular workpiece everywhere, so that the maximum value of the protruding or the concave of the tubular workpiece can be determined.
The following describes in detail the scheme of the above embodiment of the present invention:
1. the conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece according to the embodiment can be arranged at the upstream of the guide groove in the prior art and is used for automatically rejecting the tubular workpiece with the degree of concavity and convexity of the circumferential surface not matching with the track.
2. The conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece in this embodiment performs a rotary motion by the rotary belt 2. The rotary belts 2 are arranged on two sides of the bearing frame 1, and the two rotary belts 2 synchronously act to maintain the balanced conveying effect of the bearing frame 1.
3. The conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece according to this embodiment is provided with a state of always contacting the top of the tubular workpiece to be conveyed by the pressing lever 4 under the action of the pressing spring. And the rolling gear 19 is utilized to drive the bearing rods 21 to rotate in the rolling process of the rolling rack 20, and at the moment, the two bearing rods 21 supported on the two sides of the bottom of the tubular workpiece synchronously rotate in the same direction to drive the tubular workpiece to repeatedly rotate. The presser bar 4 is lifted up when the male part of the tubular workpiece passes the presser bar 4, and the presser bar 4 is lowered by the pull-down spring 12 when the female part of the tubular workpiece passes the presser bar 4. In this way, the pressing rod 4 is driven to move up and down by the rotation of the tubular workpiece in cooperation with the circumferential surface thereof.
4. The conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece in this embodiment uses the micro-motion transmission unit 9 to amplify the lifting distance value of the pressing rod 4 by the transmission ratio and then convert the amplified value into the lifting process for driving the vertical plate 5. At this time, the vertical plate 5 drives the first floating hook 6 and the second floating hook 7 to synchronously lift in the lifting process.
5. The conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece in this embodiment utilizes the up-down distribution state of the first rail 8.1 and the second rail 8.2, and the first rail 8.1 and the second rail 8.2 are respectively matched with the first floating hook 6 and the second floating hook 7 to screen out the tubular workpiece with concave or convex parts respectively exceeding preset values. In the allowable error range of the circumference of the tubular workpiece, the lifting motion of the pressing rod 4 does not enable the hook head 13 of the first floating hook 6/the second floating hook 7 to cross the first track 8.1/the second track 8.2, at this time, the tubular workpiece meeting the requirements is stably conveyed, and in the process that the tubular workpiece meeting the requirements is stably conveyed, the first floating hook 6 and the second floating hook 7 are both positioned in the area between the top surface of the first track 8.1 and the bottom surface of the second track 8.2 in the height direction.
6. The conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of the tubular workpiece in this embodiment drives the tubular workpiece to repeatedly rotate by using the carrier rod 21, so as to achieve the effect of repeatedly detecting the circumferential surface of the tubular workpiece. At the same time, the lifting movement of the presser bar 4 is always able to move a maximum value, so as to ensure that, within the range of the flat section 18, the first float hook 6 and the second float hook 7 have the maximum lifting/lowering distance. When the rising/falling distance is greater than the preset value, the first floating hook 6/second floating hook 7 slides up the first rail 8.1/second rail 8.2 through the entrance. At this time, the carriage 3 is displaced outward and the tubular workpiece is removed in the subsequent conveying process by the cooperation of the stopper 16 and the hanging groove 17.
The following describes in detail the operation of the conveyor line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to the embodiment of the present invention, taking one carrier 1 as an example, specifically as follows:
the first process comprises the following steps: the carrier 1 carries the tubular workpiece to move and conveys the tubular workpiece under the action of the revolving belt 2.
The second process is as follows: the carriage 1 enters the straight section 18 of the first track 8.1, the rolling gear 19 rolls on the rolling rack 20, and the two carriage rods 21 rotate synchronously in the same direction and drive the tubular workpiece to rotate.
In this process, all areas of the circumferential surface of the tubular workpiece pass through the pressing rods 4, so that the pressing rods 4 sequentially contact all positions of the circumferential surface of the tubular workpiece, and move up and down in real time according to the degree of concavity and convexity of the circumferential surface of the tubular workpiece under the action of the pull-down springs 12.
Since the tubular workpiece has a small degree of unevenness error on its circumferential surface after the completion of processing. Therefore, when the presser bar 4 moves up and down by the micro-motion transmission member, the distance value of the presser bar 4 moving up and down is amplified by the transmission ratio of the micro-motion transmission member and then converted into the vertical plate 5 moving up and down. At this time, the following three cases are provided:
in the first case, when the degree of concavity of the tubular workpiece exceeds a reasonable interval, the first floating hook 6 has a state in which the rising distance exceeds its preset value, and when this state occurs, the hook head 13 of the first floating hook 6 passes over the first rail 8.1 from bottom to top.
The hook head 13 of the first floating hook 6 is retracted into the main body 14 when passing over the first rail 8.1 from bottom to top, and then re-extended after the hook head 13 of the first floating hook 6 passes over the rail. During the re-extension of the hook head 13 of the first floating hook 6, the stop 16 will first be turned into the hook head 13 by the blocking action of the first rail 8.1. After the stopper 16 moves above the hanging groove 17, it is rotated out to a state where the bottom end is extended into the hanging groove 17.
In the above-described process of the first case, when the instant tubular work piece from which the hook head 13 protrudes rises the presser bar 4 due to the rotation, the first floating hook 6 falls from the highest position. At this time, since the hook head 13 is always located above the first rail 8.1, the first rail 8.1 hangs the first floating hook 6 by being supported on the plane of the hook head 13, so as to omit the remaining lowering process of the first floating hook 6.
When the tubular workpiece rotates so that the next lifting distance of the first floating hook 6 exceeds the preset value, the stop block 16 can extend the bottom end into the hanging groove 17 through rotation. And by the arrangement of the straight section 18, the rolling rack 20 and the rolling gear 19, the tubular workpiece repeatedly rotates to repeatedly display the state that the distance of the first floating hook 6 exceeds a preset value, so that the stop block 16 is repeatedly corrected, and finally, the state that the bottom end extends into the hanging groove 17 is displayed.
And a third process: after the first floating hook 6 slides on the first rail 8.1 in the second process, the first floating hook 6 drives the carriage 3 to wholly move outwards on the bearing rod 21 through the longitudinal plate 5 by utilizing the guiding function of the first rail 8.1 matched with the stop block 16 in the process of continuously conveying the tubular workpiece forwards when the first floating hook passes through the outwards bent section of the first rail 8.1. In the process, the carriage 3 rejects the tubular workpiece whose degree of concavity exceeds a reasonable interval.
Fourth process: after passing the inward bending section of the first rail 8.1, the carriage 3 returns to the inner end of the carrier bar 21 and after passing the exit of the first rail 8.1, the first float hook 6 descends to an initial state.
In the second case, when the concave degree of the tubular workpiece is within a reasonable interval, the maximum rising height of the first floating hook 6 is smaller than a preset value and is always positioned below the first track 8.1 to move. At this time, the tubular workpiece passes over the first rail 8.1 from below the inlet of the first rail 8.1, and is brought into a state of being smoothly conveyed forward.
In a third case, tubular workpieces with a degree of concavity lying in a reasonable interval are conveyed into the region of the straight section 18 of the second rail 8.2. At this time, the rolling rack 20 in the flat section 18 cooperates with the rolling gear 19 and the carrier rod 21, so that the tubular workpiece is repeatedly rotated.
In this third case, when the degree of outward protrusion of the tubular workpiece is within a reasonable range, the maximum value of the descent of the second float hook 7 is smaller than the preset value, at which time the second float hook 7 will pass over the second rail 8.2 from above the entrance of the second rail 8.2, so that the tubular workpiece is smoothly conveyed.
In this third case, when the tubular workpiece is protruding beyond a reasonable extent, the second float hook 7 has a condition in which the distance of descent exceeds its preset value, and during the presentation of this condition, the hook head 13 of the second float hook 7 passes over the flat section 18 of the second track 8.2 from top to bottom. And the slide can be guided by the second rail 8.2 by the co-operation of the stop 16 and the catch 17. And the carriage 3 rejects the tubular workpiece with the degree of protrusion exceeding a reasonable range during the passage of the bending section of the second rail 8.2.
The above is the process of respectively detecting and rejecting the concave-convex degree of the conveying line for mechanically detecting the concave-convex degree of the circumferential surface of the tubular workpiece exceeding a reasonable range. The whole process is automatically completed, and the tubular workpieces with the concave and convex exceeding a reasonable range are removed in batches and collected in a classified manner.
In the solution of the above embodiment, the distance between the plane of the first floating hook 6 and the top surface of the first rail 8.1 corresponds to a reasonable extent of the concavity of the tubular workpiece, and the distance between the plane of the second floating hook 7 and the bottom surface of the second rail 8.2 corresponds to a reasonable extent of the convexity of the tubular workpiece. The setting of the distance can be set according to the actual error range of the tubular workpiece and the transmission ratio of the micro-motion transmission part 9, and will not be described herein.
The loading and unloading processes of the corresponding bearing frame 1 can be realized by manually inserting the tubular workpieces from the rejecting channel, and the unloading can be realized by manually extracting the tubular workpieces, so that the technical problems to be solved by the embodiment of the invention are not related, and therefore, only simple description is provided and no further description is provided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (8)

1. A conveyor line for mechanically detecting the degree of concavity and convexity of a circumferential surface of a tubular workpiece, comprising:
the two sides of the bearing frame (1) are connected with a rotary belt (2) for carrying the bearing frame (1) to displace, and the bearing frame (1) is provided with two bearing rods (21) which are used for supporting two sides of the bottom of the tubular workpiece and driving the tubular workpiece to rotate;
the sliding sleeve of the sliding rack (3) is arranged on the two bearing rods (21) and positioned at the inner side ends of the bearing rods (21), a space between the sliding rack (3) and the outer side ends of the bearing rods (21) is used for placing tubular workpieces, a pressing rod (4) used for pressing the tops of the tubular workpieces is arranged on the sliding rack (3), and the inner side ends of the pressing rods (4) are arranged on the sliding rack (3) in a sliding manner in the height direction;
the first floating hooks (6) and the second floating hooks (7) are symmetrically distributed in the height direction and are arranged on the vertical plate (5), the vertical plate (5) is arranged on the sliding frame (3) in a sliding manner in the height direction, and the hook heads (13) of the first floating hooks (6) and the second floating hooks (7) are arranged to be telescopic in the axial direction parallel to the tubular workpiece;
the inlet and outlet of the outer guide rail (8) are arranged on one side of the first floating hook (6) and one side of the second floating hook (7), and the middle part of the outer guide rail (8) is provided with a bending section which is bent to the outer side end of the bearing rod (21);
the micro-motion transmission part (9) is arranged on the sliding frame (3) and is connected between the compression bar (4) and the longitudinal plate (5) in a transmission way, and is used for driving the longitudinal plate (5) to lift after the lifting distance value of the compression bar (4) is amplified when the compression bar (4) lifts; wherein:
when the pressure bar (4) ascends/descends by a preset distance, the first floating hook (6)/the second floating hook (7) slide on the outer guide rail (8) and drive the sliding frame (3) to displace towards the outer side end of the bearing bar (21) through the longitudinal plate (5) to reject the tubular workpiece, and when the ascending/descending distance of the pressure bar (4) is smaller than the preset distance, the tubular workpiece is positioned on the bearing frame (1) and is conveyed forwards;
the sliding frame (3) is of a plate surface structure corresponding to one side surface of the tubular workpiece, a longitudinal guide groove (3.1) is formed in one side surface of the sliding frame (3) far away from the tubular workpiece, a longitudinal guide plate (11) is arranged in the longitudinal guide groove (3.1) in a sliding mode, the inner side end of the pressing rod (4) is arranged at the top end of the longitudinal guide plate (11), and a pull-down spring (12) is arranged between the bottom end of the longitudinal guide plate (11) and the inner bottom wall of the longitudinal guide groove (3.1);
the micro-motion transmission part (9) comprises a micro-motion rack (9.1), a gear set (9.2) and a connecting rod group (9.3), wherein the micro-motion rack (9.1) is fixedly arranged on the side face of the longitudinal guide plate (11), an input end gear of the gear set (9.2) is meshed with the micro-motion rack (9.1), an output end gear of the gear set (9.2) is coaxially fixed with one end of the connecting rod group (9.3), and the other end of the connecting rod group (9.3) is rotationally connected to the longitudinal guide plate (11).
2. The conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to claim 1, wherein the bearing frame (1) comprises an inner frame body (1.1) and an outer frame body (1.2), the inner side end of the bearing rod (21) is rotatably mounted on the inner frame body (1.1), the outer side end of the bearing rod (21) is rotatably mounted on the outer frame body (1.2), and a rejecting channel for separating the tubular workpiece is formed between the bearing rod (21) and the outer side end of the compression bar (4).
3. The conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to claim 2, wherein the bottoms of the outer side surfaces of the outer frame body (1.2) and the inner frame body (1.1) are respectively provided with a connecting shaft (1.3), the connecting shafts (1.3) are sleeved with rail wheels (1.4), the rail wheels (1.4) are supported on a rotary rail (10), and the outer side ends of the connecting shafts (1.3) are fixedly connected with a rotary belt (2).
4. The conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to claim 1, wherein the first floating hook (6) and the second floating hook (7) further comprise a main body portion (14) and a hook spring (15), the main body portion (14) is vertically fixed on one side surface of the vertical plate (5) far away from the tubular workpiece, the hook spring (15) is arranged between the hook head (13) and the main body portion (14), the hook head (13) is telescopically arranged in the main body portion (14), and the hook head (13) extends to one side of the vertical plate (5) facing the tubular workpiece after penetrating through the vertical plate (5).
5. A conveyor line for mechanically detecting the degree of concavity and convexity of a circumferential surface of a tubular workpiece according to claim 4, wherein the outer guide rail (8) comprises a first rail (8.1) and a second rail (8.2) which are vertically distributed and are staggered in a conveying direction, the first floating hook (6) is supported by the first rail (8.1) and walks on the first rail (8.1) after rising by a preset distance, and the second floating hook (7) is limited below the second rail (8.2) and walks on the second rail (8.2) after falling by a preset distance.
6. The conveying line for mechanically detecting the degree of concavity and convexity of the circumferential surface of a tubular workpiece according to claim 5, wherein one side surface of two opposite hook heads (13) is a plane, one side surface of two opposite hook heads (13) is an inclined surface, a stop block (16) is arranged on the plane of the hook heads (13), the stop block (16) is in a right triangle shape, one bevel edge end of the stop block (16) facing the tubular workpiece is rotationally connected with the hook heads (13) and is provided with a torsion spring, the other bevel edge end of the stop block (16) can be stored into the hook heads (13) through rotation, and a hanging groove (17) for the stop block (16) to walk is arranged on one side surface of the first track (8.1) and the second track (8.2) opposite.
7. A conveyor line for mechanically detecting the degree of concavity and convexity of a circumferential surface of a tubular workpiece according to claim 6, characterized in that the upper part of said longitudinal plate (5) is provided with a cylindrical structure provided with a receiving groove (5.1) for receiving a stopper (16) when the hook (13) is retracted.
8. A conveyor line for mechanically detecting the degree of concavity and convexity of a circumferential surface of a tubular workpiece according to claim 7, characterized in that the inlets of the first rail (8.1) and the second rail (8.2) are provided with a straight section (18) parallel to the conveying direction, that the inner end of the carrier rod (21) is provided with a rolling gear (19), and that a rolling rack (20) for driving the rolling gear (19) to roll is provided corresponding to the straight section (18).
CN202211278071.9A 2022-10-19 2022-10-19 Conveying line for mechanically detecting degree of concave-convex of circumferential surface of tubular workpiece Active CN115532641B (en)

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CN107214106A (en) * 2017-06-02 2017-09-29 江苏理工学院 Long cylinder roller openings bearing inner race circularity automatic detection device
CN111744810A (en) * 2020-07-07 2020-10-09 中山职业技术学院 Small-bore part automatic feeding and roundness detection equipment
CN113118045A (en) * 2021-04-01 2021-07-16 上海应用技术大学 Short pipe detection device
CN114963944A (en) * 2022-05-24 2022-08-30 福建福山轴承有限公司 Roundness measuring device of bearing ring piece

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294454A (en) * 1992-04-23 1993-11-09 Mitsubishi Materials Corp Inspection machine
JP2007232697A (en) * 2006-03-03 2007-09-13 Asmo Co Ltd Device and method for inspecting roundness of inner circumference of cylindrical body
CN204963823U (en) * 2015-09-06 2016-01-13 昆山康斯特精密机械有限公司 Outer spherical bearing outer diameter , circularity detect machine
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